MATERIAU ET PIECE DE REACTION A FLAMME

A FLAME REACTION MATERIAL AND A FLAME REACTION MEMBER

Abrégé anglais

The present invention relates to a flame reaction material, particularly a
gas combustion flame reaction material for gas combustion appliances and a
flame reaction member thereof. The gas combustion flame reaction material
is formed by a single alkali metal or alkaline earth metal compound, and said
alkali metal or alkaline earth metal compound has a melting point lower than a
combustion temperature of combustible gases and produces a crystal after
high-temperature combustion. The flame reaction member comprises a
substrate and a flame reaction material adhered to the surface of the
substrate
in the form of crystal. The substrate is a metal conductor. Because the gas
combustion flame reaction material is formed by a single alkali metal or
alkaline earth metal compound, it is unnecessary to consider the proportion of
the metal or compound to other materials during fabrication and thus the flame
reaction member is convenient to produce. Further, the gas combustion
flame reaction material may be used to produce a flame reaction member
capable of producing a flame with a variety of colors such as yellow, purple,
pink, brick red, carmine, kelly and the like.

Revendications

What is claimed is:
1. ~A flame reaction material characterized in that the flame reaction
material
is formed by a single alkali metal or alkaline earth metal compound, and said
alkali metal or alkaline earth metal compound has a melting point lower than a
combustion temperature of combustible gases and produces a crystal after
high-temperature combustion.
2. ~The flame reaction material of claim 1, characterized in that the alkali
metal compound is selected from sodium sulfate, sodium silicate or other salts
of sodium.
3. ~The flame reaction material of claim 1, characterized in that the alkali
metal compound is potassium sulfate.
4. ~The flame reaction material of claim 1, characterized in that the alkali
metal compound is potassium chloride.
5. ~The flame reaction material of claim 1, characterized in that the alkali
metal compound is rubidium chloride.
6. ~The flame reaction material of claim 1, characterized in that the alkaline
earth metal compound is calcium chloride.
7. ~The flame reaction material of claim 1, characterized in that the alkaline
earth metal compound is strontium chloride.
8. ~The flame reaction material of claim 1, characterized in that the alkaline
earth metal compound is barium metaborate.
9. ~A flame reaction member produced from the flame reaction material of any
one of claims 1-8, characterized in that the flame reaction member comprises
a substrate, the flame reaction material is adhered to the surface of the
substrate in the form of crystal, and the substrate is a metal conductor.

Description

CA 02612354 2007-11-26
A Flame Reaction Material
and a Flame Reaction Member
FIELD OF THE INVENTION
The present invention relates to a flame reaction material, particularly a
flame reaction material for gas combustion appliances and a flame reaction
member thereof.
BACKGROUND OF THE INVENTION
The color of a flame produced by a gas combustion appliance such as a
torch, a lighter, a cigarette or cigar lighter or the like is generally blue
or nacarat,
and thus is simplex. In order to color the flame with a variety of vivid
colors to
make it more watchable and interesting, there is a need to develop a flame
reaction material suitable for gas combustion appliances. Many corporations
and people are carrying out this study. The flame reaction material should
perform a flame reaction under the high temperature of a burning gas flame to
make the flame have the corresponding color.
The principle of flame reaction is as follows. When heated, peripheral
electrons of a metal ion or atom obtain energy. Thus the electrons are
transition excited from lower-energy states to higher-energy states. These
electrons located in the higher-energy states are highly unstable and
instantly
return to the lower-energy states. In this "returning" process, the electrons
release energy, normally in the form of light energy, and thus different
colors of
flame are exhibited.
For example, a gas combustion appliance is disclosed in US patent No.
5743724 (Title: Flame Reaction Member for Gas Combustion Appliances and
A Process for Producing the Same; Patent Number: 5743724; Date of Patent:
Apr. 28, 1998), comprising a fuel storage tank, a combustion cylinder, a
nozzle
for jetting gas from the fuel storage tank into the combustion cylinder, an
igniter
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CA 02612354 2007-11-26
for igniting fuel gas jetted into the combustion cylinder, and a flame
reaction
member comprising a flame reaction material disposed with the combustion
cylinder so as to be heated by a gas flame within the combustion cylinder so
as
to produce a flame reaction which colors the gas flame by the flame reaction,
wherein the flame reaction material comprises a glass compound, which is
formed by mixing a flame reaction agent and a fused material with each other
and fusing them together. Said flame reaction agent comprises a metal
compound capable of producing the flame reaction, said fused material is
capable of being mixed and fused together with said flame reaction agent and
vitrified. This flame reaction material is formed by mixing two, even three or
more different materials together. When fabricated, the proportions between
them must be well controlled, which is very troublesome. Further, not many
colors of the flame reaction are produced.
SUMMARY OF THE INVENTION
One aspect of the present invention provides a flame reaction material
which has a simple component, is easy to prepare and produces more colors
of flame reaction.
Another aspect of the present invention provides a flame reaction member
formed by using the above flame reaction material.
Therefore, the present invention provides a flame reaction material. The
flame reaction material is formed by a single alkali metal or alkaline earth
metal
compound, and said alkali metal or alkaline earth metal compound has a
melting point lower than a combustion temperature of combustible gases used
in gas combustion appliances and produces a crystal after high-temperature
combustion. Further, the flame reaction material is adhered to the surface of
a substrate made of a metal conductor in the form of crystal to form a flame
reaction member.
Because the flame reaction material is formed by a single alkali metal or
alkaline earth metal compound, it is unnecessary to consider the proportion of
the metal or compound to other materials during fabrication and thus it is
convenient to produce. Further, the flame reaction material may be used to
produce a flame reaction member capable of producing a flame with a variety
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of colors such as yellow, purple, pink, brick red, carmine, kelly and the
like.
The present invention will be further explained in combination with
embodiments in the following.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a structurally schematic illustration of an embodiment of a flame
reaction member.
FIG. 2 is a structurally schematic illustration of another embodiment of a
flame reaction member.
DETAILED DESCRIPTION OF THE INVENTION
The flame reaction material is formed by a single alkali metal or alkaline
earth metal compound, and said alkali metal or alkaline earth metal compound
has a melting point lower than a combustion temperature of combustible gases
used in gas combustion appliances and produces a crystal after
high-temperature combustion. Generally, the combustion temperature of
combustible gases is greater than 1300 C, therefore an alkali metal or
alkaline
earth compound having a melting point lower than 1300 C may be suitable.
The alkali metal compound may be selected from the group consisting of
sodium sulfate (Na2SO4), sodium silicate, or other salts of sodium, potassium
sulfate (K2SO4), potassium chloride (KCI), or rubidium chloride (RbCl).
Sodium sulfate (Na2SO4), sodium silicate, or other salts of sodium may
produce a yellow flame reaction. Potassium sulfate (K2SO4) may produce a
purple flame reaction. Potassium chloride (KCI) may produce a pink flame
reaction. Rubidium chloride (RbCl) may produce a purple flame reaction.
The alkaline earth metal compound may be selected from the group consisting
of calcium chloride (CaC12), strontium chloride (SrCI2), or barium metaborate
(Ba(B02)2). Calcium chloride (CaCI2) may produce a brick red flame reaction.
Strontium chloride (SrCI2) may produce a carmine flame reaction. Barium
metaborate (Ba(B02)2) may produce a kelly flame reaction.
The flame reaction member comprises a substrate 1 and a flame reaction
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.
material 2 adhered to the surface of the substrate 1 in the form of crystal.
The
substrate 1 is a metal conductor (for example, nickel-chromium, stainless
steel,
etc.), formed as a wire (as shown in FIG. 1) or a flat belt and then wound as
a
helix (as shown in FIG. 1) or a ripple form.
A flame reaction member may be made as follows, for example:
= a voltage is applied onto two ends of the substrate 1;
= the flame reaction material 2 is contacted with the metal conductor
substrate 1 and melted under high temperature produced by the heat of the
metal conductor resistor;
= after converting from solid into liquid, the flame reaction material is
adhered to the surface of the substrate 1;
= the voltage applied onto the substrate 1 is then removed;
= after the temperature drops, the flame reaction material 2 converts from
liquid back into solid and is adhered to the surface of the substrate 1 made
of
the metal conductor in the form of crystal to form the flame reaction member.
As will be apparent to those skilled in the art, in the light of the foregoing
disclosure, many alterations and modifications are possible in the practice of
this invention without departing from the spirit or scope thereof.
Accordingly,
the scope of the invention is to be construed in accordance with the substance
defined by the following claims. Those of skill in the art will recognize
certain
modifications, permutations, additions and sub-com bi nations thereof. It is
therefore intended that the following appended claims and claims hereafter
introduced are interpreted to include all such modifications, permutations,
additions and sub-combinations as are within their true spirit and scope.
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